<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
    <meta charset="UTF-8">
    <title>修改密码</title>
</head>
<body>
<form action="http://127.0.0.1:5000/update1" method="post">
    <label>用户名：<input name="username"></label></br>
    <label>旧密码：<input name="password"></label></br>
    <label>新密码：<input name="new_password"></label></br>
    <button>修改</button>
</form>

</body>
</html>